Broken URL in README.QMTEST

[Joseph S. Myers]

gcc/testsuite/README.QMTEST has a broken reference to

    http://www.codesourcery.com/qm/qmtest_development

which gives a 404.

-- 
Joseph S. Myers               http://www.srcf.ucam.org/~jsm28/gcc/
  http://www.srcf.ucam.org/~jsm28/gcc/#c90status - status of C90 for GCC 3.5
    jsm@polyomino.org.uk (personal mail)
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